Question

3. Which of the following does not match the characteristics of an isotope
a. isotopes of some elements are radioactive
b. isotopes are the atoms of different elements
c. isotopes differ in number of neutrons d.isotopes have similar chemical properties​

Answer 1

Answer:

a

Explanation:

isotopes are the atoms of different elements

Answer 2

The option that does not match the characteristics of an isotope is: isotopes are the atoms of different elements.

• Isotopes are the two or more forms of the same element that differ in the number of neutrons but the number of protons and electrons remain the same.
• Some elements have radioactive isotopes.
• For example, ³H (an isotope of hydrogen), ¹⁴C (an isotope of carbon), ⁸⁷Rb (an isotope of rubidium), etc. are radioactive.
• Isotopes of an element have the same number of protons but different number of neutrons.
• Chemical properties of a substance depends on the electrons present around the nucleus of the atom.
• Since the number of electrons in the isotopes of an element are the same, all isotopes have similar chemical properties.